Problems Set #3

ATTN: answers to the below questions are due at the start of your lab period; these answers should be part of your pre-lab write-up.

1. Supply the structure of cinnamaldehyde (show the stereochemistry).

2. Name the following compounds.

3. In this week's experiment which of the above compounds are not an expected product? Explain.

4. Why do we use absolute ethanol instead of 95% ethanol in the intial part of the experiment?

5. What combination of carbonyl compound and ylide are needed to prepare the following compounds

a.	1,5-heptadiene
b.	Methyl styrene
c.	beta-Carotene use the below dialdehyde as the carbonyl source

6. What are the major advantages of the Wittig reaction in order to form alkenes?

7. Read the following article (Gillois, J.; Guillerm, G.; Stephen, E.; Vo-Quang, L., ( J. Chem. Educ. 1980, 57 , l6l)). How does the proposed synthesis strategy differ from the one use in the lab? Where do you see advantages or disadvantages for the procedure described in the reference?